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KR950017809A - Method for manufacturing refractory molded article and binder for refractory molded article - Google Patents

Method for manufacturing refractory molded article and binder for refractory molded article Download PDF

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Publication number
KR950017809A
KR950017809A KR1019940038053A KR19940038053A KR950017809A KR 950017809 A KR950017809 A KR 950017809A KR 1019940038053 A KR1019940038053 A KR 1019940038053A KR 19940038053 A KR19940038053 A KR 19940038053A KR 950017809 A KR950017809 A KR 950017809A
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South Korea
Prior art keywords
molded article
binder
refractory
metal
refractory molded
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KR1019940038053A
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Korean (ko)
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KR0128008B1 (en
Inventor
노부요시 사사끼
데쓰야 요꼬까와
요시까즈 하시모또
요시로 오오따
히데오 세끼구찌
Original Assignee
노부요시 사사끼
가부시끼가이샤 캬디크 테크놀로지 사비스
구보 다까오
가부시끼가이샤 케이에스피
시미즈 슘뻬이
다마 가가꾸 고오교 가부시끼가이샤
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Publication of KR0128008B1 publication Critical patent/KR0128008B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
    • B22C1/20—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
    • B22C1/205—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of organic silicon or metal compounds, other organometallic compounds
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • C04B35/6325—Organic additives based on organo-metallic compounds

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Mold Materials And Core Materials (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

본 발명은, (a)골재와 제1바인더를 결합하여 성형품 소체를 형성하는 공정 ; (b)주기율표 4A족 또는 탄소를 제외한 4B족 및 3A족 또는 3B족의 금속 알콕시드 및 그들의 부분 가수분해물 중에서 선택된 1종 또는 2종 이상의 금속알콕시드류와, 알칼리금속 또는 알칼리토금속의 알칼리화합물을 함유하는 알코올 용액으로 이루어지는 제2바인더를, 전기 공정 (a)에 의해 성형된 성형품 소체에 함침시켜 가수분해시키는 공정 ; (c)성형품 소체를 건조시켜 고온에서 소성하는 공정으로 이루어짐을 특징으로 하는 내화물 성형품의 제조방법이고, 또 이와 같은 내화물 성형품을 제조하는데 사용되는데 사용되는 내화물의 성형품 바인더이다.The present invention, (a) a step of combining the aggregate and the first binder to form a molded article body; (b) 1 or 2 or more metal alkoxides selected from metal alkoxides of Groups 4B and 3A or 3B and their partial hydrolysates except Group 4A or carbon of the periodic table, and alkali compounds of alkali metals or alkaline earth metals. A step of impregnating and hydrolyzing a second binder composed of an alcohol solution to be formed into the molded article body formed by the electrical step (a); (c) A molded article manufacturing method of a refractory molded article characterized in that the molded body is dried and calcined at a high temperature, and a molded article binder of a refractory article used for producing such a refractory molded article.

본 발명에 의하면, 주탕시에 기체 발생이 없고, 기포등의 주조결함을 방지할 수 있고, 또 탕의 흐름이 원활하며, 주강품 등의 상을 얇게 만들 수 있고, 더욱이 상온주조와 비교하여 적은 라이저(riser)로 주강품 등의 주조가 가능하다는 잇점이 있고, 또 양호한 치수정밀도를 얻을 수 있고, 경합금으로부터 주강품에 이르기 까지의 주조에 이용할 수 있고, 내심부에 강도를 조정할 수 있고, 붕괴성을 향상시킬 수 있는 내화물 성형품의 제조방법 및 내화물 성형품용 바인더를 제공할 수 있다.According to the present invention, there is no gas generation at the time of pouring, it is possible to prevent casting defects such as bubbles, the flow of the bath is smooth, the phase of cast steel products, etc. can be made thin, and the riser is less than that at room temperature casting. (riser) has the advantage that casting of cast steel, etc. is possible, good dimensional accuracy can be obtained, can be used for casting from light alloy to cast steel, the strength can be adjusted in the inner core, and the collapsability is improved. It is possible to provide a method for producing a refractory molded article and a binder for a refractory molded article.

Description

내화물 성형품의 제조방법 및 내화물 성형품용 바인더Method for manufacturing refractory molded article and binder for refractory molded article

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims (9)

하기의 공정으로 이루어짐을 특징으로 하는 내화물 성형품의 제조방법 : (a)골재와 제1바인더를 결합하여 성형품 소체를 형성하는 공정 ; (b)주기율표 4A족 또는 탄소를 제외한 4B족 및 3A족 또는 3B족의 금속알콕시드 및 그들의 부분 가수분해물 중에서 선택된 1종 또는 2종 이상의 금속알콕시드류와, 알칼리금속 또는 알칼리토금속의 알칼리화합물을 함유하는 알코올 용액으로 이루어지는 제2바인더를, 전기 공정 (a)에 의해 성형된 성형품 소체에 함침시켜 가수분해시키는 공정 : (c)성형품 소체를 건조시켜 고온에서 소성하는 공정.A method for producing a refractory molded article, characterized by the following steps: (a) combining the aggregate and the first binder to form a molded article body; (b) 1 or 2 or more metal alkoxides selected from metal alkoxides of groups 4B and 3A or 3B except their periodic table 4A or carbon and their partial hydrolysates, and alkali compounds of alkali metals or alkaline earth metals. A step of impregnating and hydrolyzing a second binder composed of an alcohol solution to be molded into the molded article body formed by the electrical step (a): (c) A step of drying the molded article body and firing it at a high temperature. 제1항에 있어서, 내화물 성형품은 주형임을 특징으로 하는 내화물 성형품의 제조방법.The method of claim 1, wherein the refractory molded article is a mold. 제1항에 있어서, 고온에서의 소결공정을 더 부가하여 실시함을 특징으로 하는 내화물 성형품의 제조방법.The method for producing a refractory molded article according to claim 1, further comprising a sintering step at a high temperature. 하기 공정으로 이루어짐을 특징으로 하는 중자들이(入)주형인 내화물 성형품의 제조방법. (a)골재와 제1바인더를 결합하여 중자 소체를 형성하는 공정 ; (b)주기율표 4A족 또는 탄소를 제외한 4B족 및 3A족 또는 3B족의 금속알콕시드 및 그들의 부분 가수분해물 중에서 선택된 1종 또는 2종 이상의 금속 알콕시드류와, 알칼리금속 또는 알칼리토금속의 알칼리화합물을 함유하는 알코올 용액으로 이루어지는 제2바인더를, 전기 공정 (a)에 의해 성형된 중자 소체에 함침시켜 가수분해시키는 공정 ; (c)상기 소체를 주형내에 위치를 정하고, 이 주형내에 소실모형재를 주입하여, 상기 중자 소체를 감싸 물린 소실모형을 형성하는 공정 , (d)상기 소실모형에 슬러리 및 스터코 입자들은 교대로 수회 반복하여 도포하여 내화물층을 형성한 후, 건조시키는 공정 : (e)상기 소실모형을 소실시키는 공정 , 및(f)상기한 중자 소체와 상기한 내화물층을 동시에 소성하는 공정.A method for producing a refractory molded article, wherein the core is a mold comprising the following process. (a) combining the aggregate and the first binder to form a core body; (b) contains one or two or more metal alkoxides selected from metal alkoxides of groups 4B and 3A or 3B, and partial hydrolyzates thereof except group 4A or carbon of the periodic table, and alkali compounds of alkali metals or alkaline earth metals. A step of impregnating and hydrolyzing the second binder composed of an alcohol solution to be formed into the core body formed by the electrical step (a); (c) positioning the body in the mold, and injecting the burnout modeling material into the mold to form a burnt-off model wrapped around the core body; and (d) slurry and stucco particles alternately in the burnt model. Applying it repeatedly several times to form a refractory layer, followed by drying: (e) a step of disappearing the disappearance model, and (f) a step of firing the core element and the refractory layer simultaneously. 제1항 또는 제 4항에 있어서, 골재로는 규사, 뮬라이트, 알루미나, 석영, 지르콘 중에서 선택된 1종 또는 2종 이상의 혼합물이며, 제1바인더는 유기계 똔 무기계임을 특징으로 하는 내화물 성형품의 제조 방법.The method for producing a refractory molded article according to claim 1 or 4, wherein the aggregate is one or a mixture of two or more selected from silica sand, mullite, alumina, quartz and zircon, and the first binder is organic or inorganic. 제1항 또는 제 4항에 있어서, 상기 제2바인더 중의 상기 금속알콕시드류는 알킬실리케이트 및 아릴실리케이트의 어느 한쪽이거나 또는 양쪽의 부분 가수분해물이고, 상기 알칼리 화합물은 알칼리금속의 수산화물이거나 그의 염 또는 알콕시드이며, 이들을 가수분해 후의 SiO2와 Na2O의 구성비율에 상응되도록 배합함을 특징으로 하는 내화물 성형품의 제조방법.The metal alkoxide in the second binder is one or both partial hydrolyzates of alkyl silicate and aryl silicate, and the alkali compound is a hydroxide of an alkali metal or a salt or alkoxy thereof. A method for producing a refractory molded article, wherein the compound is blended so as to correspond to the composition ratio of SiO 2 and Na 2 O after hydrolysis. 제1항 또는 제4항에 있어서, 상기 가수분해반응은 대기중의 수분, 가습기에 의한 수분, 함수알코올 중의 수분에 의해 행해짐을 특징으로 하는 내화물 성형품의 제조방법.The method for producing a refractory molded article according to claim 1 or 4, wherein the hydrolysis reaction is performed by moisture in the atmosphere, moisture by a humidifier, or moisture in hydrous alcohol. 알코올 용재 중에 바인더 성분으로서, 하기 일반식 RmM1(OR)4-m또는 M2(OR)3(단, 식중, M1은 주기율표 4A족 또는 탄소를 제외한 4B족의 금속을, M2는 주기율표 3A족 또는 3B족의 금속을 나타내며, R은 서로 동일하거나 또는 다른 탄소수 1∼6개의 알킬기, 탄소수 6∼8개의 아릴기, 탄소수 2∼6개의 알록시알킬기, 또는 탄소수 7∼12개의 아릴옥시알킬기이며, M1이 Si인 경우 m온 0∼3의 정수이고, M1이 Si가 아닌 경우에는 m은 0이다)로 표시되는 알코올 가용성의 금속알콕시드 및 그들의 부분 가수 분해물 중에서 선택된 1종 또는 2종 이상의 금속알콕시드류를 금속산화물로 환산하여 1∼50중량%의 양으로 함유하며; 또, 하기 일반식 M3OR' 또는 M4(OR')2(단, 식중 M3은 알칼리금속을, M4는 알칼리토금속을 나타내며, R'는 수소 또는 탄소수 1∼6개의 알킬기를 나타낸다)로 표시되는 알코올 가용성의 알칼리화합물을 금속산화물로 환산하여 1∼16중량%의 양으로 함유하는 것임을 특징으로 하는 내화물 성형품용 바인더.As the binder component in the alcohol solvent, the following general formula R m M 1 (OR) 4-m or M 2 (OR) 3 (wherein M 1 represents a metal of Group 4A or Group 4B except carbon, M 2 Represents a metal of group 3A or 3B of the periodic table, and R is the same or different alkyl group having 1 to 6 carbon atoms, aryl group having 6 to 8 carbon atoms, aryl group having 2 to 6 carbon atoms, or having 7 to 12 carbon atoms Is an oxyalkyl group, when M 1 is Si, an integer of m to 0 to 3, and when M 1 is not Si, m is 0); one selected from alcohol-soluble metal alkoxides and partial hydrolyzates thereof Or 2 or more metal alkoxides in an amount of 1 to 50% by weight in terms of metal oxide; In addition, the following general formula M 3 OR 'or M 4 (OR') 2 (wherein M 3 represents an alkali metal, M 4 represents an alkaline earth metal, and R 'represents hydrogen or an alkyl group having 1 to 6 carbon atoms) A binder for refractory molded articles characterized in that it contains an alcohol-soluble alkali compound represented by a metal oxide in an amount of 1 to 16% by weight. 제8항에 있어서, 상기 금속알콕시드류가 알록시실란 및 그들의 부분 가수분해물중에서 선택된 1종 또는 2종 이상의 규산에스테르 또는 알킬규산에스테르임을 특징으로 하는 내화물 성형품용 바인더.The binder for refractory molded articles according to claim 8, wherein the metal alkoxides are one or two or more silicic acid esters or alkyl silicate esters selected from alkoxysilanes and partial hydrolyzates thereof. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940038053A 1993-12-28 1994-12-28 Process for preparing refractory molded articles and binders therefor KR0128008B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP35414893 1993-12-28
JP1993-354148 1993-12-28
JP06183048A JP3139918B2 (en) 1993-12-28 1994-07-13 Method for producing refractory molded article and binder for refractory molded article
JP1994-183048 1994-07-13

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KR950017809A true KR950017809A (en) 1995-07-20
KR0128008B1 KR0128008B1 (en) 1998-04-02

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